CVE-2025-3643
MEDIUMCVSS 5.4/10EPSS 0.28%
Last modified
CVE-2025-3643 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A flaw was found in Moodle. The return URL in the policy tool required additional sanitizing to prevent a reflected Cross-site scripting (XSS) risk.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.
Description
A flaw was found in Moodle. The return URL in the policy tool required additional sanitizing to prevent a reflected Cross-site scripting (XSS) risk.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Moodle | Moodle | < 4.1.18 |
| Moodle | Moodle | >= 4.3.0, < 4.3.12 |
| Moodle | Moodle | >= 4.4.0, < 4.4.8 |
| Moodle | Moodle | >= 4.5.0, < 4.5.4 |
References
- https://access.redhat.com/security/cve/CVE-2025-3643Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2359742Issue Tracking
- https://moodle.org/mod/forum/discuss.php?d=467604Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-3643?
A flaw was found in Moodle. The return URL in the policy tool required additional sanitizing to prevent a reflected Cross-site scripting (XSS) risk.
How severe is CVE-2025-3643?
CVE-2025-3643 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2025-3643?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2025-3643?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST